The When We Were Young songstress referred to her 3-year-old son Angelo as her "emotional place," explaining that he's made her a more emotional person "in every single way possible."

But for an artist like Adele, being fulfilled isn't the best state of mind to be in when trying to create a tear-inducing album like 25!

In fact, the 27-year-old revealed that Angelo made her so happy that it caused problems when she was writing the album! She explained:

"I found it impossible for a while. I didn't know what I wanted to write about. … What's wrong is I wasn't sad."

On past records, the songbird's music was powered by sadness — so this time, she thought about saying "hello" to her audience a second time!

She explained:

"Hello is just about reconnecting with everyone else and myself. I couldn't get over my guilt of leaving my kid to go and write a record and stuff like that. So [it's] getting over that — getting on the other side of that. It was just, you know, it's in general, just hello to everyone."

Zayn previewed the duet by posting a black and white pic of himself with Swifty on his Instagram -- but hey, she is bestiez with his girlfriend Gigi Hadid, so it wouldn't be unusual that they hang out... But collab?!